The consequence of failure of any electrical equipment in potentially explosive atmospheres can be catastrophic with a potential of multiple deaths and complete loss of the company asset.
Rigtech Independent Limited can provide assurance that your Ex equipment is in full compliance with international standards, codes and practices and legal obligations.
“Having been working on a jack drilling unit during a severe shallow gas blow out, the first thought was ‘I hope it doesn’t ignite’. The effectiveness of the Ex maintenance and of the shut down systems soon comes to the forefront of the mind”.
Fortunately, the above incident passed without mishap and a safe conclusion was helped in part by the standard of Ex electrical integrity.
The starter in the picture here fails on a number of counts
Hazardous areas classifications
There is an amount of heavy electrically driven equipment on drilling units such as Drawworks, Mud pumps, Top drives, Propulsion, Cranes, Winches, etc. All have complex electrical applications both in the power drives for the main motors and in the control functions. Rigtech has the personnel with the knowledge, experience and expertise to effectively inspect, repair and maintain all drilling equipment.
This Ex rated junction box was found to be corroded through where a cable tray had been in contact with the top of it
Thermal imaging discovered this left hand cable showing an elevated temperature. On investigation the fault was actuality in the right hand cable, consequently all the current was passing though the left.
The arrangement of this cable catenary on a modified rig is exceptionally poor.
Electrical safety is not just about the major hazards